Magnetic Fields Chapter 1

Front

What are magnetic poles?

Back

Magnetic poles are the regions of a magnet where the magnetic force is strongest. Every magnet has two poles: a north pole and a south pole.

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Front

What happens when like poles of magnets are brought together?

Back

Like poles repel each other. For example, two north poles or two south poles will push away from each other.

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Front

What happens when opposite poles of magnets are brought together?

Back

Opposite poles attract each other. For example, a north pole will attract a south pole.

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Front

What is a magnetic field?

Back

A magnetic field is the area around a magnet where magnetic forces can be detected. It is represented by field lines that show the direction and strength of the magnetic force.

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Front

How does a compass work?

Back

A compass works by using a small bar magnet that aligns itself with the Earth's magnetic field, pointing towards the magnetic north.

Front

What is the Earth's magnetic field?

Back

The Earth's magnetic field is a magnetic field that extends from the Earth's interior out into space, affecting compass needles and protecting the planet from solar wind.

Front

What is the difference between a permanent magnet and an electromagnet?

Back

A permanent magnet is made from materials that are magnetized and create their own persistent magnetic field, while an electromagnet is created by running an electric current through a coil of wire.

Front

What is magnetic flux?

Back

Magnetic flux is a measure of the quantity of magnetism, taking into account the strength and the extent of a magnetic field.

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Front

What is the right-hand rule in magnetism?

Back

The right-hand rule is a mnemonic for understanding the direction of magnetic force, current, and magnetic field. If you point your thumb in the direction of current, your fingers will curl in the direction of the magnetic field.

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Front

What materials are attracted to magnets?

Back

Materials that are attracted to magnets include iron, nickel, and cobalt. These materials are ferromagnetic.

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